I am far from Gnarr core in my riding, and people were riding where and how i ride not to many years ago on forks worse than what now come on the cheapest BSO mountainbikes and loving every minute of it.
So there is no reason I can not do the same on my current set up.
I try to buy the best I can afford, and if someone can afford to pay a shed load of money on components then fair play to them.
But realistically would a £1000 set of forks make a huge difference to my mtb experience over a £300 set, apart from satisfying a little bike envy, no.
But a long as people keep buying them , it will fuel progress and I will benefit, as trickle down technology means I get to ride the the same top end stuff, just I am a couple of years behind.
It is very easy to get get starry eyed over the latest gear but there is a lot to be said for ride what you got and then worry about it when it breaks.